Which air pollutant is known to be produced from minerals in soil like uranium and radium?

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Radon is a naturally occurring radioactive gas that is produced from the decay of uranium and radium found in soil and rocks. It is not typically visible, has no smell, and can accumulate in indoor spaces, particularly basements and poorly ventilated areas. The presence of radon is particularly concerning due to its health risks, as prolonged exposure is known to increase the risk of lung cancer.

The other options are not produced from minerals in the soil in the same way. Lead can be found in certain types of soil, but it is primarily introduced into the environment through human activities, such as mining and industrial processes. Carbon monoxide is a pollutant that mainly originates from combustion processes, such as vehicle emissions, rather than from soil minerals. Asbestos is a group of minerals used in various industrial applications but is not a pollutant produced by soil minerals; rather, it is a man-made contaminant that poses health risks when airborne. Hence, radon is the only option directly linked to mineral decay in the ground.